( 1159 ) 
they pleafe^ will ever be efteemed an ufeful Invention, and 
(as an old Author fays) very much p^r commodhu delUfove^ 
ri vekk^. 
One of the firft Objeds I ti^yed my Glaffes by was a liv- 
ing Lonfe, in which I could plainly fee the motion of the 
Mufcles ("when be ftirr'd his Legs) all which are joyned in 
albngifli dark fpot in the middle of his Bread, where the 
Tendons feeni airunited. The like modon oi Mufcles is^ 
aifo vifible in the head when he ftirs his horns, and in the 
feveral Articulations of his Legs. I faw alfo clearly a mul- 
titude of various branchings ot Arteries etrid Veins, and the 
Pulfe regularly beating in feveral Arteries. But (he raoPc 
entertaining fight is the Pendaltick, inoUan of the Ihteflines^, 
which is continued from the Stomach thro all the Guts to 
the Anus. I have obferved the like Perijlaltick fyJotioTJin a 
Flea, and in feveral forts of fmall tranfparent Maggots and- 
Caterpillars- But a Loufe is eafie(^ to be had in all Seafon^^ 
and will bear rougher handling, and live confined betweers 
two concave pirates, if not cruflied, 4 or 5 d^ys. 
I thought a MtU vv^ould alfo prove a good fubj^ft for the 
like purpofe, but found them not fo tranfparent as I ex- 
pefted. However I difcovered fomething in my obfervati- 
on of them^ which may perhaps be new to you. For I 
plainly faw that all the briftles on the body of one of them 
(which to a common fingle Glafs, and to the greateft Mag- 
nifier of my three glaffed Microfcope look like plain fmooth 
hairs) were when viewed with a large Augmenter all fpi- 
caced (i^I may make a word) or bearded like the Ear on 
the Seed head of feme Grafles. The appearance v?as like 
the annexed figure, which (liews part of the briftle, but I 
cannot exprefs the beauty and regularity of it, and every 
briftle on the whole Body and Legs, both long and (hort, 
had the lame formation. But I muft tell you withal^ that 
all Mites are not fo, for of 7 or 8 inciofed together, I found 
but one whofe briftles were of this make, in the reft the 
bo-f .s only were fjoicaied. Whether they were of differenc 
A a a a- a a a a 2 kinds < 
